Most of the policemen in the film, including Det. Nicky Dimes (Chris Penn) carry Beretta 92FS pistols, as was issued to the LAPD at the time. The Italian gunman Luca (Paul Ben-Victor) also draws his own Beretta during the final standoff.
Beretta Inox
Frankie (Frank Adonis), another of the Mafioso, carries a Beretta Inox, which he holds to the head of Clifford Worley (Dennis Hopper) and later a woman he holds hostage in the hotel.
Desert Eagle
A Sicilian mobster is briefly seen with a Desert Eagle in the weapon-assembling scene before the final shootout.
Heckler & Koch P7M8
Italian mob boss Vincenzo Coccotti (Christopher Walken) uses a Heckler & Koch P7M8 to kill Clifford Worley after questioning him about his son's whereabouts.
Smith & Wesson Bodyguard
One of the policeman during the final standoff pulls out his Smith & Wesson Bodyguard backup revolver, firing it akimbo with his Beretta.
Luca carries an unknown 12 Gauge Pump Shotgun as the mobsters question Floyd (Brad Pitt) about Clarence, Alabama, and Dick, and during the final shootout.
Winchester 1897
An Italian mobster packs a Winchester Model 1897 into a bag with many other guns and ammunition before the hotel shootout
Winchester 1897 sawed-off
The Sicilian hitman Virgil (James Gandolfini) carries a Winchester Model 1897 sawed-off shotgun when he confronts Alabama while waiting for Clarence to return. Alabama, after grabbing it from him, kills him by shooting him and beating him with it.